COPACETIChttp://www.worldwidewords.org/ipa/copacetic.gif
Fine, excellent, going just right.
It’s possible that this word has created more column inches of speculation in the USA than any other apart from OK. It’s rare to the point of invisibility outside North America. People mostly become aware of it in the sixties as a result of the US space program—it’s very much a Right Stuff kind of word. But even in the USA it doesn’t have the circulation it did thirty years ago. Dictionaries are cautious about attributing a source for it, reasonably so, as there are at least five competing explanations, with no conclusive evidence for any of them
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